<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>按钮样式</title>
    <!-- 引入 Bootstrap 的 CSS 文件 -->
    <link rel="stylesheet" href="./Bootstrap/css/bootstrap.min.css">
    <style></style>
    
</head>
<body>
    <button class="btn btn-primary btn-lg">按钮1</button>

    <button class="btn btn-success btn-sm">按钮2</button>    

</body>
</html>